ASTROSAT CZTI

Data Quality Report

Orbit 03506

Creation date: 2024-06-27T14:30:17.441489
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1G05_192T01_9000000466_03506cztM0_level2.evt modeM0/AS1G05_192T01_9000000466_03506cztM0_level2_quad_clean.evt
Size (bytes)488,203,20088,453,440
Size465.6 MB 84.4 MB
Events in quadrant A3,860,694546,829
Events in quadrant B3,627,044546,464
Events in quadrant C3,644,278547,312
Events in quadrant D3,158,464530,906

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165902
B0158731
C0161291
D0151741

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7283761.043526%
B7283380.521763%
C7283710.974873%
D7283280.384457%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7698 7284 22 22 0.29% 0.30%
B 7698 7284 3 3 0.04% 0.04%
C 7698 7283 32 32 0.42% 0.44%
D 7698 7284 17 17 0.22% 0.23%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 8 15 395192 2312.42 825 809 170.5
A 14 238 181765 1061.02 825 809 170.5
A 0 118 45784 263.71 825 809 170.5
B 15 204 249325 1502.29 843 822 165.4
B 4 200 48972 291.08 843 822 165.4
B 0 229 19777 114.59 843 822 165.4
C 1 192 418052 2209.65 808 813 188.8
C 15 208 40758 211.54 808 813 188.8
C 1 16 14268 71.26 808 813 188.8
D 13 223 65549 331.3 803 779 195.5
D 13 239 23256 114.97 803 779 195.5
D 5 233 22985 113.58 803 779 195.5

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
Veto Counter